diff options
Diffstat (limited to 'net/iucv/iucv.c')
| -rw-r--r-- | net/iucv/iucv.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c index 8f57d4f4328a..a35240f61ec3 100644 --- a/net/iucv/iucv.c +++ b/net/iucv/iucv.c @@ -50,7 +50,6 @@ #include <asm/ebcdic.h> #include <asm/io.h> #include <asm/s390_ext.h> -#include <asm/s390_rdev.h> #include <asm/smp.h> /* @@ -517,6 +516,7 @@ static int iucv_enable(void) size_t alloc_size; int cpu, rc; + get_online_cpus(); rc = -ENOMEM; alloc_size = iucv_max_pathid * sizeof(struct iucv_path); iucv_path_table = kzalloc(alloc_size, GFP_KERNEL); @@ -524,19 +524,17 @@ static int iucv_enable(void) goto out; /* Declare per cpu buffers. */ rc = -EIO; - get_online_cpus(); for_each_online_cpu(cpu) smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1); if (cpus_empty(iucv_buffer_cpumask)) /* No cpu could declare an iucv buffer. */ - goto out_path; + goto out; put_online_cpus(); return 0; - -out_path: - put_online_cpus(); - kfree(iucv_path_table); out: + kfree(iucv_path_table); + iucv_path_table = NULL; + put_online_cpus(); return rc; } @@ -551,8 +549,9 @@ static void iucv_disable(void) { get_online_cpus(); on_each_cpu(iucv_retrieve_cpu, NULL, 1); - put_online_cpus(); kfree(iucv_path_table); + iucv_path_table = NULL; + put_online_cpus(); } static int __cpuinit iucv_cpu_notify(struct notifier_block *self, @@ -589,10 +588,14 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self, case CPU_ONLINE_FROZEN: case CPU_DOWN_FAILED: case CPU_DOWN_FAILED_FROZEN: + if (!iucv_path_table) + break; smp_call_function_single(cpu, iucv_declare_cpu, NULL, 1); break; case CPU_DOWN_PREPARE: case CPU_DOWN_PREPARE_FROZEN: + if (!iucv_path_table) + break; cpumask = iucv_buffer_cpumask; cpu_clear(cpu, cpumask); if (cpus_empty(cpumask)) @@ -1692,7 +1695,7 @@ static int __init iucv_init(void) rc = register_external_interrupt(0x4000, iucv_external_interrupt); if (rc) goto out; - iucv_root = s390_root_dev_register("iucv"); + iucv_root = root_device_register("iucv"); if (IS_ERR(iucv_root)) { rc = PTR_ERR(iucv_root); goto out_int; @@ -1736,7 +1739,7 @@ out_free: kfree(iucv_irq_data[cpu]); iucv_irq_data[cpu] = NULL; } - s390_root_dev_unregister(iucv_root); + root_device_unregister(iucv_root); out_int: unregister_external_interrupt(0x4000, iucv_external_interrupt); out: @@ -1766,7 +1769,7 @@ static void __exit iucv_exit(void) kfree(iucv_irq_data[cpu]); iucv_irq_data[cpu] = NULL; } - s390_root_dev_unregister(iucv_root); + root_device_unregister(iucv_root); bus_unregister(&iucv_bus); unregister_external_interrupt(0x4000, iucv_external_interrupt); } |